Valve device



J. NEEDHAM.

VALVE DEVlCE.

APPLICATION men JUNEQ, 1920.

1,40%527, Patented Jan. 3, 1922.

gummy; Jbsep71, Needkwm 35 T1 15 flbto'ww a Ma i-5% l ,5, the body portion of the device which is UNITED sTATEs PATENT OFFICE. I

JOSEPH HEEDHAM, OE NEW YORK,

VALVE DEVICE Specification of Letters Patent.

P tente Jan; 3, 1:92a-

Application filed time 9; 1920'. Serial no. 387,505.

To all whom it may concern;

Devices, of which the following is a speci-- fication, such asiwill enable those skilled in the art to which it appertains to make and use the same.

This invention relates to valve devices and particularly to devices of this class designed for use in connection with apparatus employing high. pressure gases or liquids; and theobject ofthe. invention is to provide a valve device of the-class specified which is automatically opened by the passage of a liquid or gas there-through in one direction at a predetermined pressure, and which is also automatically closed by gravity and back pressure; a further object being to provide a means for relieving, the back pressure in the device or permitting of the pas- Sage of a liquid or gas therethrough in opposite directions; a still further object being-t0 provide means for controlling and regulating the discharge .of the back pressure of the liquid or gas through the valve device; and with. these and other objects in view the invention consists in a valve device of the class and for the purposespecifined, constructed and operating as herein after described and claimed.

The invention. is fully disclosed in the following specification, of which the accompanyingdraw-ing forms a part, in which the separate parts of my improvement are designated by suitable reference characters. in each of the views, andin which:

Fig, 1 is a side and sectional view of my improved valve device in its normal or closed position; and, v i

Fig, 2 a partial section on the line 2-2 of Fig.1. I

In Fig. l of the drawing I have shown at provided at its opposite sides with hexagonal extensions, 6 and 7 internally threaded to receive pipes, couplings and the like in the usual manner, The body of the device is also provided with an upwardly directed tubular extension 8 having a detachable cloj sure cap 9. e v

.f The opposite side walls of the extensions 80f; the body 5 are provided with bosses 10 and; 11, thebosslO being threaded to receive a sleeve12; the outer end-portion of which is closed by aplug 'lihebossfll is-threaded 'toreceive a plug 14: having an external nut portion 15' and the inner end of which is recessed as shownat 16 'to receive a trimnion 17-" at one endof a tubular shaft-"18, which is mounted transversely of the body .of the; device between the bosses l0 and 1 1'.

A threadedshaft 19 is mounted in the tubular shaft 18 and the outer end portion 20' of which has a bearing in the sleeve 12; and

is also provided with an angular extension 21 which extends into the sleeve" 12 and upon which a suitable key device is adapt ed to be placed when the plug 13 is" removed for rotating the shaft l9. i a

The shaft 19 is provided adjacent to its outer end with anenlarged beveledportion 22, which operates in connection with a beveled face 23 on thecorresponding end of the tubular shaft 18 to hold saidshafts together within the body portion and in common alinement. The inner end, of-the shaft 19 is provided with an enlarged portion 24 which fits withinthev shaft 18 and is provided with an annular groove 25. Theyouter end portion of the shaft 18 is beveled as shown at 26, and this bevel operates in a bevel seat 27 in the recess'16 of the plug 14, and this construction in connection with the outer end portion of the shaft 19, or the mounting thereof, permits of'the free rotary oscillatory movement of the shafts18 and 19 in thesleeve 12' and, plug 1 1'.

Mounted on the shaft 18 isan 311 111 28 which is secured thereto by a screw '29 passed through the head port-ion 30' of said arm through the shaft 18 and into the annular groove 25 on the enlarged portion 24 of the shaft 19. The free end portion of the arm is provided with a circular aperture 31.

Movably mounted on the shaft 19 within the tubular shaft 18 is a block 32 which is threaded to correspond with the thread on the shaft 19, and said block isprovided with anoutwardly directed arm 33 which passes through and operates in an elongated aperprovided with a disk 38 of comparatively soft metal or fibrous material, which operates in connection with a valve seat 39 in the bodv portion 5' of the device to form a gas and which is'fianged as shown at 44 and serves to hold the disks 36 and 38 firmly upon the sleeve 40.

$lidably mounted in the thimble-shaped member 43is a supplemental valve member 45, the inner end of which is provided with an enlarged head 46. which operates in connection with the outer end portionof the sleeve 40 to close the communication between said sleeve and the thimble-shaped member 43. The thimbleshaped member 43 is provided about the periphery thereof with a plurality of apertures 47 which, when the supplemental valve member 45 is open, places the main chamber 48 of the valve device or the body portion 5 thereof in communication with a supplemental chamber 49 in said body 1 portion.

' when the pressure in the chamber 48 reaches a predetermined degree, the degree being de- The supplemental valve member 45 is tubular in form, as'shown at 50, and mounted in the outer end or head portion 51 of said valve, which protrudes beyond the thimbleshaped member 43, is a screw 52 orv other attaching device to which one end of a spiral spring 53 mounted within the tubular portion 50 of the valve 45 is secured. Connected with the other end of the spring 53 is a wire or cable 54, which passes around a pulley 55 rotatably mounted in the inner end portion of thesleeve40, and said wire or cable passes upwardl through a slot 56 in said sleeve and around another pulley 57 mounted. on the screw 29, and the other end of said wire or cable is secured. to the outwardly .directed arm 33 of the block 32.

From the fore oing description the operation of mv improved valve device will be readilyunderstoodwhen taken in connection with the accompanying drawing and the following statement; The position of the main valve member 35 and supplemental valve member 45 shown in Fig. 1 is their normal or inoperative position, the valve being held upon its seat by gravity, while the valve 45 is held upon its seat 58 by the spring 53. When liquid or gas under pressure is introduced into the chamber 49 the valve member 35 will be raised from its seat 39, and said liquid or gas will pass into "the chamber 48 and through the valve device. In the presence of excess pressure in the chamber 48, or a pressure greater than that in the chamber 49, the valve 35 will be automatically closed, and

t'ermi'ned by the tension of the spring 53, the

excess pressure will automatically open the valve member 45 to place the chamber 48 in communication with the chamber 49 through the apertures 47 in the thimble-shaped member 43, and a by-pass ort or passage 59 formed by the sleeve 40, thus allowing the excess pressure in the chamber 48 to escape into the chamber 49.

, From the fore oing it will be seen that the supplemental valve 45 acts in the manner of a relief valve to relieve the pressure in the chamber 48 to prevent accidents that might occur in the resence of too reat a pressure in said chamber. twill also be apparent that by rotating the shaft 19 by means of a suitable key which is placed on the angular end portion 21 of said shaft. the block 32 may be moved longitudinally of the shaft 19 within the tubular shaft 18 to either increase or decrease the tension of the spring 53 by pulling or slackening the cable 54, which is attached to the free end of said spring. With this attachment the exact pressure at which the valve 45 will open may be positively determined.

It will also be understood that whileI have showna particular form of valve body and certain details of construction for supporting and actuating the separate valve members which I employ I am not necessarily limited to these details, and various changes in and modifications of the construction herein shown and described may be made,

within the scope of the appended claims,

without departing from the spirit of my invention or sacrificing its advantages.

Having fully, described my invention, what I claim as newand desire to secure'by Letters Patent, is

1. A valve device of the class described comprising a hollow body portion, a valve seat in send body ortion, an. arm pivotally mountedin the bot y portion, a sleeve mount- M ed in the free end portlon of sand arm, a

main valve mounted on said sleeve and adapted to operate in connection with the valve seat in the hollow body portion for dividing said body portion into independent chambers, said sleeve forming a communication between said chambers, a supplemental valve movably mounted in connection with said sleeve and adapted to normally close the communication between said chambers through said sleeve, and adjustable means 7 for controlling the movement of said supplemental valve,

2. A valve device of the class described comprising a hollowvbody portion, a valve seat in said body portion, anarm p'ivotally mountedin the body portlon, a sleeve mounted in the free end portion of said arm,*a. main valve mounted on said sleeve and adapted to operate'in connection with the valve seat in dividing saidbody portion into independent the hollow body portion for chambers, an apertured thimble-shaped' member mounted in connection with said sleeve, a supplemental valve movably mounted in connection with said thimble-shaped member and adapted to operate in connection with said sleeve to normally close the communication between said chambers through said sleeve, a spring connected with said supplemental valve, a threaded shaft mounted in the pivoted end of said arm, and means in operative connection with said shaft and said spring whereby the rotation of said shaft will increase or decrease the tension of said spring.

8. A valve device of the class described comprising a hollow body portion, a valve seat in said body portion, an arm pivotally mounted in the body portion, a sleeve mounted in the free end portion ofsaid arm, a, main valve mounted on said sleeve and adapted to operate in connection with the valve seat in the hollow body portion for dividing said body portion into independent chambers, an apertured thimble-shaped member mounted in connection with said sleeve, a supplemental valve movably mount-I ed in connection with said thimble-shaped member and adapted to operate in connection with said sleeve to normally close the communication between said chambers through said sleeve, a spring connected with said supplemental valve, the pivoted end of said arm being tubular in form, a threaded shaft rotatably mounted in the tubular portion of said arm, a block mounted to move longitudinally of said shaft, and means connected with said block and with said spring whereby the rotation of said shaft will increase or decrease the tension of said spring.

4. A valve device of the class described comprising a suitable body portion provided with a valve seat, a member pivotally mounted in the body portion and having a free end portion provided with a sleeve, a main valve member mounted in connection with said sleeve and adapted to operate in connection with said valve seat to divide the body into independent chambers, an aper turcd member mounted in connection wlth said sleeve at one side of sald valve, a supplemental valve movably mounted in saidvalve member mounted in connection with said sleeve and adapted to operate in connection with said valve seat to divide the body into independent chambers, an apertured member mounted in connection with said sleeveat one side of said valve, a supplemental valve movably mounted in said,

apertured member and adapted to operate in connection with said sleeve to normally close the communication between said cham-,

bers through said sleeve, a spring connected with said supplemental valve, a threaded shaft mounted in the pivoted end portion of said first named member, a block mounted to move longitudinally of said shaft, means connected with said block and with said spring whereby the rotation of said threaded shaft may increase or decrease the tension of said spring, and means whereby a suitable tool may be inserted into the body portion of the valve device to engage and rotate said threaded shaft.

6. A. valve device of the class described comprising a suitable body portion provided with a valve seat, a member pivotally mounted in said body portion and having a free end portion provided with a sleeve, a main valve detachably mounted on said sleeve and held in position by an apertured member detachably mounted in connection with sand sleeve at one side of said valve, said main valve being adapted to'divide the body porplemental tensionally controlled valve movably mounted in said apertured member and adapted to operate in connection with said sleeve to normally close the communication between said chambers through said sleeve. In testimony that I claim the foregoing as my invention I have signed my name in presence of the subscribing witnesses this 8th day of June, 1920.

JOSEPH ,NEEDHAM.

lVitnesses:

G. E. MULREANY,

H. E. THOMPSON. 

